516445513 has 4 divisors (see below), whose sum is σ = 518351488. Its totient is φ = 514539540.

The previous prime is 516445483. The next prime is 516445529. The reversal of 516445513 is 315544615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315544615 = 5 ⋅63108923.

It is a cyclic number.

It is not a de Polignac number, because 516445513 - 2¹⁷ = 516314441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (516445913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952581 + ... + 953122.

It is an arithmetic number, because the mean of its divisors is an integer number (129587872).

Almost surely, 2^516445513 is an apocalyptic number.

It is an amenable number.

516445513 is a deficient number, since it is larger than the sum of its proper divisors (1905975).

516445513 is a wasteful number, since it uses less digits than its factorization.

516445513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905974.

The product of its digits is 36000, while the sum is 34.

The square root of 516445513 is about 22725.4375755452. The cubic root of 516445513 is about 802.3087023120.

The spelling of 516445513 in words is "five hundred sixteen million, four hundred forty-five thousand, five hundred thirteen".